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Finding the Fourth Proportional to 180,998,126.80, 271,497,190.20 and 65,986,421.20

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Solution

The fourth proportional to 180,998,126.80, 271,497,190.20 and 65,986,421.20 is: 98,979,631.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,998,126.80 : 271,497,190.20 = 65,986,421.20 : x
  2. Step 2: Convert to fraction form
    180,998,126.80/271,497,190.20 = 65,986,421.20/x
  3. Step 3: Cross multiply
    180,998,126.80x = 271,497,190.20 × 65,986,421.20
  4. Step 4: Simplify right side
    180,998,126.80x = 17,915,127,947,153,712
  5. Step 5: Solve for x
    x = 17,915,127,947,153,712/180,998,126.80
  6. Step 6: Final answer
    x = 98,979,631.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.